Shock-absorber.



R. T. WAINWRIGHT. SHOCK ABSORBEP..

APPLICATION FILED AUG.21, 1911.

1,082,454, Paten-ted July 16,1912.

asma SHOCK-ABSORBER.

Specication of Letters Patent.

Patented July 16, 1912.

Application led August 21, 1911. Serial No. 645,196r I To all who/metmay concern Be it known that I, RICHARD T. `WA1N WRIGHT, a citizen ofthe United States, rcsiding in the town of Rye, county of Westchester,and State of New York, have invented certain new and usefulImprovementsI in Shock-Kbsorbers, of which the following is a clear andcomplete disclosure.

My invention vrelates to shock absorbers of the kind commonly employedin aut-omobiles and similar vehicles, to supplement and improve theaction of the springs supporting the body, by preventing excessivevibration.

The object of my vinvention is to provide a device of this kind whichwill be strong and durable and cheap to manufacture.

In the drawing accompanying and forming a part of this specification, Ihave illustrated one embodiment of my invent-ion and the way in which itis to be applied.

In this drawing, Figure 1 is a side elevation of my improved device; Fig.` 2 shows one way of applying the device to a' vehicle; and Fig. 3 isa transverse sectional view of the shock absorber shown in Figs. l and2.

Referring in detail to the construction shown in these views, thenumeral 1 designates a body of resilient rubber, which is firmlysecured, preferably by vulcanization at each end, to metallic plates 2.These plates, one of which may be designated the axle attachment and theother the body attachment, are, in the practice of my invention, securedone to the axle vor running gear of theK vehicle and the other to thebody. The rubber member 1 contains a longitudinally disposed opening 5,which is surrounded by a cylindrical spring 6 disposed around theopening and embedded in the body of the rubber.

In Fig. 2 a single shock absorber of the kind above described is shownin position on a vehicle. It is located at the middle of the axle 3, towhich it is secured at its lower end, and is fixed to the middle of thebody i at its upper end. By reason of the simple and strong constructionwhich my arrangement permits, a single shock absorber will be foundsuicicnt in many instances.

I have found that when a cylindrical spring is combined with a rubbermember and an opening in the manner shown in these drawings, theabsorber, while possessing a certain amount of resiliency, has avaluable damping effect on the action of the springs.

I am aware that rubber bumpers have..

heretofore been used to supplement springs,

but I am not aware that it has ever been proposed to construct a shockabsorber by embedding a spring in a body of rubber and by providingattaching devices at each end so that the device may act both as atension and compression device.

What I claim is:

A device of the kind described, comprising an axle attachment, a bodyattachment, a resilient rubber member having a longitudinally disposedopening therein surrounded by a cylindrical spring embedded in the bodyof the rubber, said rubber member being shaped to resist both tensionand compression and having its two ends firmly secured to 'saidattachments, substantially as described.

RICHARD T. WAINWRIGHT.

Witnesses:

WALTER S. J ONES, JOHN W. PETERS.

